Safety Is it harmful to humans- Ammonium Hydroxide can be harmful if it is contacted with skin or eyes, it is non-corrosive to eyes and lungs, a liquid or spray can damage your mucous membrane of eyes or mouth, in some cases if it is contacted with skin it can produce a severe burn and also if exposed to it to much it can killl you.
What is the best way to store it- Indoors in a temperature controlled room at 65-70 degrees fahrenheit.
What special care is protocol for handling it- wear gloves and keep your mouth closed or wear something over your mouth
How is it neutralized- By adding about an equivalent amount of strong acid.